Bouhafs H.
Etude des caractéristiques mécaniques d’un stent Derardja A. Génie Mecanique,Univ batna,algérie. 2011.
SAFARI-MOHSENABAD S, SELVAGANAPATHY PR, Derardja A, DEEN MJ.
Electrochemical Growth of High-aspect Ratio Nanostructured Silver Chloride on Silver and its Application to Miniaturized Reference Electrodes. Nanotechnology [Internet]. 2011;Vol. 22(31) :315601, 8 journal pages.
Publisher's VersionAbstract
The sensitivity of many biological and chemical sensors is critically dependent on the stability of the potential of the reference electrode being used. The stability of a reference electrode's potential is highly influenced by the properties of its surface. In this paper, for the first time, the formation of nanosheets of silver chloride on silver wire is observed and controlled using high anodic constant potential (>0.5 V) and pulsed electrodeposition. The resulting nanostructured morphology substantially improves the electrode's potential stability in comparison with the conventional globular surface structure. The increased stability is attributed to the increase in the surface area of the silver chloride produced by the nanosheet formation.
Derardja A, BAROURA L, BRIOUA M.
Isotropic Stress Distribution in Cu/(001) Fe Two Sheets, World Academy of Science. Engineering and Technology [Internet]. 2011;Vol:5 :pp 07-23.
Publisher's VersionAbstract
The nanotechnology based on epitaxial systems includes single or arranged misfit di slocations. In general, whatever is the type of dislocation or the geometry of the array formed by the dislocations; it is important for experimental studies to know exactly the stress distribution for which there is no analytical expression [1,2]. This work, using a numerical analysis, deals with relaxation of epitaxial layers having at their interface a periodic network of edge misfit dislocations. The stress distribution is estimated by using isotropic elasticity. The results show that the thickness of the two sheets is a crucial parameter in the stress distributions and then in the profile of the two sheets.
A comparative study between the case of single dislocation and the case of parallel network shows that the layers relaxed better when the interface is covered by a parallel arrangement of misfit.
Consequently, a single dislocation at the interface produces an important stress field which can be reduced by inserting a parallel network of dislocations with suitable periodicity.
